Environmental Science
Many wild plant and animals are on the verge of extinction due to

Non availability of food
None of these
Climatic changes
Habitat destruction

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Environmental Science
The atmosphere near the earth's surface is "heated from below." Which of the following does not significantly contribute to this heating?

Absorption of infrared energy that has been radiated from the surface
Convection from a hot surface
Heat energy from the earth's interior
Conduction of heat upward from a hot surface

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